All my entered text is plain Ascii (A = 65, B = 66, C = 67 and so on...)
User entered password is also plain Ascii, so I have two sets of numbers (first one for entered text, and second (shorter one) for entered password), so the goal is to "scramble" the first set of numbers by using the second set of numbers)?

It should support full Ascii (0 - 255) but outputed ("scrambled") values for each "coded" number (at the end) can really be anything; starting from negative to positive (preferably real, meaning - preferably no integer) numbers...)